[....] Starting enhanced syslogd: rsyslogd[ 18.194843] audit: type=1400 audit(1521667923.234:5): avc: denied { syslog } for pid=4135 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.113937] audit: type=1400 audit(1521667928.153:6): avc: denied { map } for pid=4273 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.10.4' (ECDSA) to the list of known hosts. executing program [ 29.453141] audit: type=1400 audit(1521667934.492:7): avc: denied { map } for pid=4287 comm="syzkaller893038" path="/root/syzkaller893038604" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 34.783133] kasan: CONFIG_KASAN_INLINE enabled [ 34.787828] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.795198] general protection fault: 0000 [#1] SMP KASAN [ 34.800740] Dumping ftrace buffer: [ 34.804257] (ftrace buffer empty) [ 34.807944] Modules linked in: [ 34.811114] CPU: 1 PID: 4287 Comm: syzkaller893038 Not tainted 4.16.0-rc6+ #271 [ 34.818529] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.827866] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.832935] RSP: 0018:ffff8801d29cfc78 EFLAGS: 00010206 [ 34.838266] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 34.845505] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.852745] RBP: ffff8801d29cfc90 R08: 0000000000000000 R09: 1ffff1003a539f0b [ 34.859991] R10: ffff8801d29cf820 R11: 0000000000000001 R12: ffff8801b0ce27d2 [ 34.867234] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d29cfd08 [ 34.874475] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000092db840 [ 34.882673] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.888525] CR2: ffffffffff600400 CR3: 00000001b07a4002 CR4: 00000000001606e0 [ 34.895764] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.903005] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.910331] Call Trace: [ 34.912892] smc_shutdown+0x3ed/0x540 [ 34.916677] SyS_shutdown+0x137/0x290 [ 34.920447] ? SyS_getsockopt+0x340/0x340 [ 34.924568] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.930072] ? do_fast_syscall_32+0x156/0xf9f [ 34.934536] ? SyS_getsockopt+0x340/0x340 [ 34.938652] do_fast_syscall_32+0x3ec/0xf9f [ 34.942947] ? do_int80_syscall_32+0x9c0/0x9c0 [ 34.947499] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.952224] ? syscall_return_slowpath+0x550/0x550 [ 34.957120] ? syscall_return_slowpath+0x2ac/0x550 [ 34.962016] ? prepare_exit_to_usermode+0x350/0x350 [ 34.967004] ? sysret32_from_system_call+0x5/0x3c [ 34.971818] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.976632] entry_SYSENTER_compat+0x70/0x7f [ 34.981006] RIP: 0023:0xf7f47c99 [ 34.984339] RSP: 002b:00000000ff9c805c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 34.992019] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 34.999262] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 35.006501] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 35.013741] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 35.020980] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.028228] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 0c 12 11 fd 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 32 4c 8b 63 28 48 b8 00 00 00 00 00 fc ff df 49 [ 35.047296] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d29cfc78 [ 35.053892] ---[ end trace cf8c5df71b34b491 ]--- [ 35.058630] Kernel panic - not syncing: Fatal exception [ 35.064374] Dumping ftrace buffer: [ 35.067888] (ftrace buffer empty) [ 35.071567] Kernel Offset: disabled [ 35.075164] Rebooting in 86400 seconds..